Granted Patent
Utility
US 5,680,421 · App. 08/604,832
Frame synchronization apparatus
Inventors:
Haruhiro Shiino, Norio Yamaguchi, Toshimichi Naoi, Ryoichi Miyamoto
Patented Case
View Patent ↗
Granted: Oct 21, 1997
Filed: Feb 22, 1996
Inventors
Haruhiro Shiino
Norio Yamaguchi
Toshimichi Naoi
Ryoichi Miyamoto
Assignee (at issue)
OKI ELECTRIC INDUSTRY CO., LTD.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.